Skimming-regulator for ice-making apparatus.



. I w. H. MANNS. SKIMMING REGULATOR FOR ICE MAKING APPARATUS.

APPLICATION FILED JULY 10,1907.

979,523. Patented Dec.27,1910.

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WILLIAM H. MANNS, OE VJAYNESBORD, PENNSYLVANIA.

SKIMMING-REGULATOR FOE ICE-MAKING APPARATUS.

erases.

Specification of Letters Patent.

Application filed July 10, 1907.

Fatented Dec. 27, 1910.

Serial No. 883,109.

I '0 all whom it may concern.-

Be it known that I, \ViLLL-iii H. MANNS, a citizen of the United States,residing at Waynesboro, in the county of Franklin, and State ofPennsylvania, have invented certain new and useful Improvements inSkiinniing-Regulators for Tce-Makin Apparatus, of which the following isa specification.

My said invention consists in an improved construction of device forautomatically regulating the skimming of boil-tanks forming a part of anice making apparatus, whereby such a device is provided which ispositive and etlicient in its operation and simple and comparativelyinexpensive in construction, all as will be hereinafter more fullydescribed and claimed.

Referring t0 the accompanying drawing which is made a parthereof and onwhich similar reference characters indicate similar parts, Figure 1 is alongitudinal section through a boil-tank of the character describedequipped with my improved skimming regulator, Fig. 2 a detail view onthe dotted line 22 in Fig. 1, and Fig. 3 a sectional view through theregulating device.

In said drawings the portions marked A represent the boil-tank, and Bthe casing of the regulating device.

The tank A is or may be of any appropriate construction for the purpose,being provided with a steam-coil a in the bottom thereof connected withthe steam pipe 1 by which the heat is supplied for boiling the watertherein. A skim-dish A provided with a discharge a is securedon one endof said tank and skim holes a are provided in the end of said tankleading into said skim-dish on the normal water level therein, as isusual. A water supply pipe 2 leading from any source of supply isarranged to supply the water to said tank as desired.

The casing B is in effect a goose-neck extension of the purified waterdischarge pipe B which leads from the bottom of tank A to the filtersand purified-water storage-tank (not shown) as is usual. Said goose-neckis secured by means of bolts Z), or in any suitable manner, over theperforation in the bottom of said tank. Said bolts also preferablysecure the flange or fitting Z) on the under side of said bottom towhich the upper end of pipe B is attached. Packing-rings b areinterposed between the opposite sides of said bottom and the adjacentparts around the bolts Z) to insure a watertight joint. The inner end ofsaid goose neck extends down to a position near the bottom of said tankand is formed with a alve seat at its extreme lower end. A valve B ismounted in said lower end and adapted to seat on said valve seat. Saidvalve is pivot-ally mounted on the inner end of the lever B which isfulcrumed on the pivot 6 held in bearings on the ears or flanges 32*cast on the outer lower edge of the part of casing 13 surrounding thevalve. A float B is attached to the outer end of lever.B by means of ascrew-threaded stem If which is adapted to screw into a screw-threadedperforation in the outer end of said arm B A nut Z) is adapted to limitthe adjustment of the parts and permit the length of stem between thetop of arm B and the float to be regulated as may be desired.

The operation of the apparatus is as follows: The distilled water, orother water from which the ice is to be made, comes through pipe 2 intotank A. where it is boiled by the heat supplied through the pipe 1 tothe steam-coil a in the bottom of said tank. The impurities which riseto the surface of the water run through the skim-holes a in the end ofsaid tank into the skim-dish A and are discharged through the pipe 0 Theskimming takes place whenever the level of the water in said tank Arises above the lower edge of the skim-holes. The float B is so adjustedby means of its screwthreaded connection with the arm B that when thewater rises to above the level of the skinrholes sui'liciently to carrythrough the skim-holes more than the skum and other impurities on thesurface of the water it will operate to lift the outer end of arm B andpull valve 13 oft its seat on the lower end of the goose-neck casing 13,when the water in tank A. will flow through said goose-neck anddischarge through the pipe B to the filters and storage-tank. As soon asthe level of the water has fallen sulfieiently said valve will be closedby said float and the out-flow of the purified water stopped until theiii-flow of the water through pipe 2 has again raised the level of thewater in the tank sufficiently to repeat this operation.

By reason of having the gooseneck shaped casing B in the form shown itwill be seen that the purified water is always discharged from near thebottom of the tank where itis in its cleanest state, the impuritiesbeing caused to rise to the top by the boiling operation. Also it willbe seen that the form of said casing prevents any air-bubbles fromgetting into the water, the goose-neck forming a trap or seal which isalways full of water and allows no bubbles to enter. This would be trueeven though the valve might leak as there will always be a space in saidgoose-neck above said valve filled with water. By reason of theadjustment provided between the float B and the arm B the operation ofthe device may be very sensitively regulated so that the skimming can beconducted according as may be required by the character of the waterused and the amount of impurities which it contains.

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is:

1. In an automatic skimming regulator for ice making apparatus, thecombination, with the boil-tank provided with skim-holes at a certainlevel, of a gooseneck secured in the bottom thereof over the opening inthe discharge pipe, a valve-seat being formed at its inner end, a valvemounted in said inner end of the goose-neck on the inner end of apivoted lever, and a float connected with the outer end of said pivotedlever to normally rest at substantially the normal water level when saidvalve is closed, substantially as set forth.

2. The combination, with the boil-tank of an ice making apparatus formedwith a skimming arrangement at a certain level, of a goose-neck mountedover the opening in the purified water discharge pipe, a valve in theinner end of said goose-neck, and a float for controlling said valve toopen the same when the water rises in said tank above the skimming leveland close it when the water falls below said skimming level,substantially as set forth.

3. The combination, with a boil-tank pro vided with a skimmingarrangement at a certain level, of a discharge pipe leading from saidtank, a goose-neck secured inside of said tank over the opening to saiddischarge pipe, the inner end of which is arranged near the bottom ofsaid tank and below the bend in said goose-neck, a valve mounted in saidinner end, and a float mounted in said tank and connected with saidvalve by means of a pivoted lever, said float and said lever beingadjustably secured together, substantially as set forth.

In witness whereof, I, have hereunto set my hand and seal atVVaynesboro, Penna. this 20th day of June, A. D. nineteen hundred andseven.

WILLIAM H. MANNS. [L. s]

Witnesses A. H. BAER, A. H. BET'rs.

